5/8″ Hose Clamp Size: 7/16″ – 1″ For use in heavy duty bilge pump discharge and livewell circulation. Smooth black PVC tube reinforced with white PVC helical rod. Excellent flexibility. Smooth outer surface permits easy clamping. Not recommended for use in Alcohol, anti-freeze, petrochemical, mild acid, solvent or pressurized water systems. Temperature range is -40� F to 160� F. Sold in 50′ box.